package com.chance.web.admin.service.impl;

import com.chance.common.constant.RedisConstant;
import com.chance.common.minio.MinioProperties;
import com.chance.common.utils.RedisImagesAddUtil;
import com.chance.web.admin.service.FileUploadService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileUploadServiceImpl implements FileUploadService {
    @Autowired
    private MinioProperties properties;

    @Autowired
    private MinioClient client;

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        boolean bucketExists = client.bucketExists(BucketExistsArgs.builder().bucket(properties.getBucketName()).build());
        // 判断桶是否存在
        if (!bucketExists) {
            client.makeBucket(MakeBucketArgs.builder().bucket(properties.getBucketName()).build());
            client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(properties.getBucketName()).config(createBucketPolicyConfig(properties.getBucketName())).build());
        }

        // 生成文件名
        String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
        // 文件上传
        client.putObject(PutObjectArgs.builder().
                bucket(properties.getBucketName()).
                object(filename).
                stream(file.getInputStream(), file.getSize(), -1).
                contentType(file.getContentType()).build());

        // 将图片链接加入redis
        RedisImagesAddUtil.imageAddRedis(RedisConstant.ALL_IMAGES_REDIS, filename);

        return String.join("/", properties.getEndpoint(), properties.getBucketName(), filename);
    }
    /*
     *  给桶设置访问权限
     * */
    private String createBucketPolicyConfig(String bucketName) {

        return """
                {
                  "Statement" : [ {
                    "Action" : "s3:GetObject",
                    "Effect" : "Allow",
                    "Principal" : "*",
                    "Resource" : "arn:aws:s3:::%s/*"
                  } ],
                  "Version" : "2012-10-17"
                }
                """.formatted(bucketName);
    }
}
